> Where did you look? A source install of Postfix using default paths > places an /etc/postfix/aliases file.
I installed from CentOS RPMs. The version I have is postfix-2.3.3-2.3.el5_6. /etc/postfix contains these files: access header_checks main.cf.rpmsave postfix-script transport bounce.cf.default LICENSE makedefs.out post-install virtual canonical main.cf master.cf relocated generic main.cf.default postfix-files TLS_LICENSE